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convert S4 to S3; add some extra methods to DMatrix

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This commit is contained in:
Vadim Khotilovich
2016-03-27 19:22:22 -05:00
parent d27bfb61b0
commit 71f402ac16
13 changed files with 675 additions and 149 deletions
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13
R-package/man/getinfo.Rd
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@@ -1,27 +1,26 @@
% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/getinfo.xgb.DMatrix.R
\docType{methods}
% Please edit documentation in R/xgb.DMatrix.R
\name{getinfo}
\alias{getinfo}
\alias{getinfo,xgb.DMatrix-method}
\alias{getinfo.xgb.DMatrix}
\title{Get information of an xgb.DMatrix object}
\usage{
getinfo(object, ...)
\S4method{getinfo}{xgb.DMatrix}(object, name)
\method{getinfo}{xgb.DMatrix}(object, name)
}
\arguments{
\item{object}{Object of class \code{xgb.DMatrix}}
\item{...}{other parameters}
\item{name}{the name of the field to get}
\item{name}{the name of the information field to get (see details)}
}
\description{
Get information of an xgb.DMatrix object
}
\details{
The information can be one of the following:
The \code{name} field can be one of the following:
\itemize{
\item \code{label}: label Xgboost learn from ;
@@ -34,8 +33,10 @@ The information can be one of the following:
data(agaricus.train, package='xgboost')
train <- agaricus.train
dtrain <- xgb.DMatrix(train$data, label=train$label)
labels <- getinfo(dtrain, 'label')
setinfo(dtrain, 'label', 1-labels)
labels2 <- getinfo(dtrain, 'label')
stopifnot(all(labels2 == 1-labels))
}